JP3494725B2 - Casting operation control method in continuous casting equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling a casting operation in a continuous casting facility, which allows a small number of workers to safely operate the continuous casting facility with a simple operation.

[0002]

BACKGROUND OF THE INVENTION The casting operation of continuous casting equipment is carried out by the associated operation of a number of components (devices). To give a concrete example, a swing tower that moves a ladle; movement of a tundish, replacement of a soaking nozzle,
Tundish turret for removing slag, etc .; sand discharging device for discharging ladle sand; long nozzle support device for replacing and supporting long nozzles; long nozzle preheating device;
Immersion nozzle replacement device; Mold powder injection device; Metal injection device for connection in continuous casting; Eddy current sensor for detecting discharge of molten steel from tundish;
Etc. operate in association with each other, and casting operations such as casting start, ladle exchange, tundish exchange, casting end, and trouble handling are performed.

In the conventional continuous casting equipment, a start-up operation switch is provided for each operation of each of these devices, and a worker confirms the operation of each device while checking each device and operation. By turning on each
Casting operation is in progress. In addition, the device corresponding to driving,
The worker and the operation thereof are determined by various combinations based on the judgment based on experience. Taking the relationship between the tundish at the start of casting as an example, first, an operator turns on the tundish movement switch of the tundish turret to move the tundish above the casting position. Next, set the eddy current sensor to the fixed position, set the long nozzle to the predetermined position, and set the mold powder feeding device to the fixed position by turning on the eddy current sensor, the long nozzle support device, and the mold powder feeding device, respectively. By doing. After confirming that the eddy current sensor, long nozzle and mold powder feeding device have been set as specified, the worker turns on the tundish turret again to lower the tundish and set it at the pouring position. Then, the preparation for starting the casting related to the tundish is completed.

As described above, in the conventional continuous casting equipment, in the casting operation, the worker moves to the corresponding equipment,
It is performed by turning on the switch corresponding to each operation and checking each operation by the worker, which is very complicated and time consuming, and many workers are required. There is.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, and it is possible to perform the casting operation with a small number of workers and with a simple operation.
Moreover, it is another object of the present invention to provide a method for controlling a casting operation in a continuous casting facility, which can sufficiently secure safety.

[0006]

In order to achieve the above object, the present invention is directed to an operation event from the next time onward,
A casting operation control method that automatically recognizes the operation of the constituent devices of the continuous casting equipment according to this instruction, and automatically operates each constituent device according to the recognition by a start instruction, including movement of the ladle and tundish. Before moving the ladle and moving the sand, stop the operation of the corresponding component device before that, and move the ladle,
Provided is a casting operation control method in a continuous casting facility, which is characterized by restarting operation and continuing automatic operation thereafter by an instruction to move a tundish or start sand removal.

[0007] Further, the above-mentioned operation events include start of casting, replacement of ladle with replacement of immersion nozzle, replacement of ladle without replacement of immersion nozzle, replacement of same tundish, replacement of different tundish, casting. It is preferably one or more selected from the group consisting of termination, treatment of long nozzle trouble, and treatment of immersion nozzle trouble.

The casting operation control method in the continuous casting equipment of the present invention will be described in detail below. FIG. 1 is a schematic plan view of a casting floor of a continuous casting facility for carrying out a casting operation control method (hereinafter referred to as a control method) in the continuous casting facility of the present invention, and FIG. 2 is a schematic side sectional view thereof. . Note that FIG.
Shows the casting state in the equipment shown in FIG.

In the continuous casting equipment shown in FIGS. 1 and 2, various casting operations are basically performed by the swing tower 14, the tundish turret 16, and the sand discharging device 1.
8. Long nozzle (hereinafter referred to as L / N) support device 2
0, L / N preheating device 22, plasma heater 24, electromagnetic coil 26, immersion nozzle (hereinafter referred to as I / N) replacement device 28, mold powder charging device 30, metal charging device 3
2, the eddy current sensor 34, the preheating device 36, and the automatic equipment deck 38, and the operation of each device is controlled by the control system for the casting operation (not shown). In the illustrated example, reference numeral 50 is a mold.

The swing tower 14 is equipped with molten steel-filled or empty ladle 10 at both ends of a linear arm portion rotatable about the center, and the ladle is rotated by rotating the arm portion. Swivel 10 to move ladle 10 to ladle crane 40
Mounting position 1 for transferring the ladle 10 conveyed by
4a, a sand discharging position 14b for discharging sand for preventing seizure in the ladle 10, and a pouring position 42. Further, the swing tower 14 is provided with a ladle tilting device for tilting the ladle 10 in order to discharge the entire contents of the ladle 10 and a lifting device for raising and lowering the ladle 10 at each position. .

The tundish turret 16 swivels the tundish 12 so that the pouring position 42 and the slag position 16 are reached.
a, the tilting position 16b, and the preheating position 16c, and is moved up and down at each position. In the continuous casting equipment of the illustrated example, the tundish 12 for replacing the sliding nozzle (S / N) of the tundish 16 corresponds to the tilted position 16b of the tundish turret 16.
A tilting carriage 44 for tilting and a S / N exchanging device 46 for exchanging the S / N are arranged. On the other hand, a preheating device 36 for preheating the tundish 12 before use is arranged corresponding to the preheating position 16c.

The sand discharging device (sand discharging cart) 18 is provided with a ladle 1 before pouring molten steel from the ladle 10 into the tundish 12.
A device for discharging the sand filled in 0,
As shown in FIG. 5, it is configured to be movable from the fixed position 18a to the position corresponding to the sand discharging position 14b on the circumference of the same center as the turning of the ladle 10.

The L / N support device 20 is an L / N preheating device 2
The preheated L / N 48 is taken out from the No. 2 and moved, and is mounted and supported on the ladle 10 at the pouring position 42. Also,
The L / N preheating device 22 heats (preheats) the L / N 48 before it is used.

The plasma heater 24 heats the molten steel in the tundish 12 being cast by the plasma arc emitted from the plasma torch. Further, the electromagnetic coil 26 is provided to accelerate the floating separation of non-metallic inclusions mixed in the molten steel by applying a rotating magnetic field to the molten steel in the tundish 12 during casting to rotate the molten steel.

The I / N exchange device 28 is a tundish 1
2 to replace the I / N for casting the molten steel into the mold 50, the mold powder charging device 30 to charge the mold powder into the mold 50 at the start of the molten steel casting, and the metal charging device 32 to the tundish 12 The connection jig is inserted at the time of replacement or the like. Further, the eddy current sensor 34 forms a constant magnetic field in a region including I / N, and
/ N is a sensor that detects the start of molten steel outflow from / N by modulating the magnetic field. Further, the automatic equipment deck 38 is L /
It is for riding on the tundish 12 when the N is exchanged, and automatically moves up and down as needed.

Since the continuous casting equipment of the illustrated example implements the control method of the present invention, the casting operation control system is operated by the system for managing the entire equipment and the operator's input etc. Upon receiving the instruction of the event, the operation of the device (component) for performing the casting operation such as the swing tower 14 and the tundish turret 16 is automatically recognized according to the instruction of the operation event.

As the operation event, concretely, the start of casting, the exchange of the ladle 10 with the exchange of I / N, the exchange of the ladle 10 without the exchange of I / N, the same tundish 12
Replacement (that is, waste steel slag from the tundish 12), replacement of a different tundish 12, completion of casting,
L / N troubles such as clogging of L / N 48 (L / N replacement) and I / N troubles such as I / N clogging (I / N replacement) are illustrated. , The operation of each device is automatically recognized (set) according to the instruction of this operation event.

For example, if the operation event instructed is I / N
If the ladle 10 is to be replaced, the new ladle 10 (new ladle) filled with molten steel is mounted on the swing tower 14, the new ladle 10 is moved to the sand discharging position 14b, I / Operations such as N exchange, sand discharge from the new ladle 10 and movement to the pouring position are automatically recognized. In addition, if the ladle 10 is replaced without changing the I / N, after the new ladle 10 is mounted on the swing tower 14, the sand discharge from the ladle 10 and the movement to the casting position are recognized. .

Similarly, if the instructed operation event is the exchange of the same (or different) tundish 12, the swing tower 14 of the new ladle 10 filled with molten steel will be described.
Mounting on a new ladle, moving the new ladle 10 to the sand discharging position 14b, moving the tundish 12 that has finished casting to the slag position 16a, moving the tundish 12 from the slag position 16a to the pouring position 42. (When different tundish 12 is replaced, movement of new tundish 12 from preheating position 16c to pouring position 42), sand discharge from new ladle 10 and movement to pouring position are automatically performed. Be recognized.

If the instructed operation event is the start of pouring, the tundish 12 is moved from the residual heat position 16c to the pouring position 42, and after the movement of the tundish 12, a new ladle 10 filled with molten steel is provided. The movement such as the movement from the mounting position 14a to the pouring position 42 is automatically recognized. If the instructed operation event is the pouring end, the ladle 10 is moved from the pouring position 42 to the mounting position 14a.
Operations such as movement of the tundish 12 from the casting position 42 to the slag position 16a after the movement of 0 are automatically recognized. When an L / N trouble occurs, the ladle 10 being cast is moved from the pouring position 42 to the retracted position between the fixed position 18a and the pouring position 42, the L / N 48 is replaced, and the ladle 10 is moved.
Operations such as movement from the retracted position to the casting position 42 are automatically recognized. Furthermore, if I / N trouble occurs,
Raising ladle 10 to upper limit during casting, tundish 12
To the upper limit, I / N exchange, tundish 12 lowering, ladle 10 lowering, etc. are automatically recognized.

When the operation of each device in response to the designated operation event is recognized, the operation of each device recognized in advance is activated by an instruction from the management system or an activation instruction made by an input by a worker. Accordingly, the automatic operation of the casting operation instructed is started. Here, in the control method of the present invention, the start instruction does not automatically operate the instructed casting operation (operation event) until the end,
Only the movement of the ladle 10, the movement of the tundish 12, and the sand discharge from the ladle 10 are stopped, and the operation of the corresponding component device is stopped before that, and the operation is restarted by the start instruction of each operation by the worker or the like. Then, the automatic operation thereafter is continued.

As is well known, continuous casting equipment includes many factors that lead to serious accidents, and its operation requires sufficient caution and safety. Particularly, the pouring operation such as the start of pouring, the exchange of the ladle 10, the exchange of the tundish 12, the end of the pouring, and the L / N trouble treatment is a work involving a large amount of molten steel, and is accompanied by danger. Here, as a result of intensive studies by the present inventors, if the ladle 10 is moved, the tundish 12 is moved, and the sand is removed from the ladle 10 safely, a serious accident can be prevented. , It was found that the safety of the casting operation in continuous casting can be almost certainly ensured.

Therefore, in the control method of the present invention,
The operation of each device is automatically recognized in response to the instruction of the operation event from the next time onward, and the automatic operation of each device is started according to the setting by the operation start instruction, but the ladle 10 and the tundish 12 are moved. , And only sand removal from the ladle 10,
Before that, the operation of the corresponding device is stopped, and after necessary safety confirmation and the like are performed, the operation is restarted by the start instruction of the switch and the like and the subsequent automatic operation is continued. Since the control method of the present invention has such a configuration, it is possible to perform the casting operation with a small number of workers and with a simple operation, and yet to ensure safety sufficiently. It was possible. In the control method of the present invention, the operation start instruction is to move the ladle 10 or the tundish 12,
It may be accompanied by sand discharge, and the movement of the ladle 10 and the tundish 12 and the start instruction of sand discharge may be performed at the same time (with one switch).

Hereinafter, the ladle 10 is exchanged with the I / N exchange, and the same (or different) tundish 12 is used.
The exchange will be described in more detail as an example. FIG. 3 shows a flowchart of the exchange of the ladle 10 accompanied by the exchange of I / N by the continuous casting equipment of the illustrated example. For example, the operator uses the operating device to instruct "replacement of ladle (L / D) accompanied by I / N exchange" as the next operation event. This instruction is issued by the operator, for example, by using the touch panel type display of the operating device as shown in FIG.
It is performed by touching the "I / N exchange available" part.
Further, after this instruction, the display is switched to that according to "replacement of ladle with I / N exchange". Further, at the same time, various operations such as the presence / absence of L / N exchange, which are performed during various operation events, are simultaneously instructed. The pouring operation control system receives this instruction and
The movement and movement of each device such as the swing tower 14 and the L / N support device 20 are automatically recognized.

When a start instruction of "replacement of ladle accompanied by I / N exchange" is made by an operation of a worker, a new ladle 10 filled with molten steel is moved by the ladle crane 40 into the swing tower 14. When this is detected by a load cell or the like, the new ladle 10 is raised to the upper limit in order to rotate the swing tower 14. Then, the sand discharging device 18 is moved to a position corresponding to the new ladle 10 and is ready to move in synchronization with the swing of the ladle 10 by the swing tower 14 (invoking the sand discharging truck).

At the same time, the ladle (old ladle) 10 during the injection of molten steel into the tundish 12 is tilted (tilted) by the ladle tilting device to inject the remaining molten steel, and when the injection is completed, The S / N of the ladle 10 is closed, and the mold powder feeding device 30 retracts. When the molten steel injection from the old ladle 10 is completed, the tilt of the old ladle 10 is restored,
The inlet of the lid of the tundish 12 is opened to remove the L / N 48, and then the old ladle 10 is raised to the upper limit.
The L / N support device 20 is synchronized with the rise of the old ladle 10.
Raises the L / N 48 and raises the L / N 48 to the L / N pre-installation position.

When the pouring operation control system confirms that the above operation has been completed by the sensor or the like arranged in each device, the new ladle 10 is mounted on the display at the mounting position 14a.
Is displayed to the effect that preparation for moving to the sand discharging position 14b has been completed. This display is performed, for example, by displaying a switch for starting the movement of the ladle 10 from the mounting position 14a to the sand discharging position 14b on the display, or by blinking the switch. After confirming the work up to this point, safety confirmation, and necessary work, the worker presses the switch to instruct to start moving the ladle 10. By this instruction, the swing tower 14 is driven to move the new ladle 10 from the mounting position 14a to the sand discharging position 14b, and at the same time, the sand discharging device 18 also moves to the sand discharging position 14b. Furthermore, by driving the swing tower 14, the tundish 1
The old ladle 10 that was injecting the molten steel into 2 also moves from the pouring position 42 at the same time.

On the other hand, when the sensor or the like detects that the old ladle 10 has moved from the pouring position 42, the automatic stop control for stopping the pouring from the tundish 12 is started. When the casting is completed, the plasma heater 24 retracts. When the plasma heater 24 retracts,
The tundish 12 is raised by the tundish turret 16, the vortex sensor 34 is retracted to a position corresponding to the I / N exchange, and the I / N exchange device 28 exchanges the I / N. When the I / N exchange is completed, the eddy current sensor 34 and the mold powder feeding device 30 are set, the tundish 12 is lowered to a height for casting, and the automatic equipment deck 38 is returned to the original position.

When it is confirmed that the old ladle 10 has moved from the pouring position 42 when the L / N exchange is instructed, the L / N support device 20 is driven and a new L / N support device 20 is driven. /
Take N48 out of the L / N preheater 22 and cast it at position 4
2 (L / N pouring position set) and further inserted into the tundish 12 (L / N pre-mounting position set). On the other hand, if L / N is not exchanged, L / N
N support device 20 waits at the upper limit position, then L / N4
Set 8 to the position before mounting.

When the pouring operation control system confirms that the above operations have been completed by the sensors or the like arranged in the respective devices, the display shows the sand discharging position and the pouring position of the new ladle 10 in the same manner as above. A message indicating that preparation for moving to 42 is completed is displayed. After the worker confirms the safety and the like, when he pushes a switch for starting the sand discharging and the movement of the new ladle 10 to the casting position 42, the S / of the ladle 10 at the sand discharging position 14a
N is opened to remove sand, then swing tower 1
4 drives to move the new ladle 10 to the pouring position 42. When the new ladle 10 is moved to the pouring position 42, the L / N support device 20 attaches the L / N 48 to the new ladle 10 and enters the synchronized state, and the new ladle 10 and the L / N 48 are in the specified position (lower limit +5
0mm) and tundish 12 L / N4
8 is set, the inlet is closed, and the tundish 1
The lid of 2 is closed. On the other hand, the empty old ladle 1 moved to the mounting position 14a by moving the new ladle 10 to the pouring position 42
0 is lowered and the S / N is closed, and is conveyed by the ladle crane 40.

As described above, in the exchange of the ladle accompanied by the exchange of I / N by this equipment, the worker starts the movement of the ladle 10 from the mounting position 14a to the sand discharging position 14b, and the sand. It is only necessary to give a total of two start instructions (three times if the start of ladle exchange start is included) for the switches that start discharging and moving the new ladle 10 to the pouring position 42. The ladle 10 is replaced with the replacement of / N.

FIG. 5 shows a flow chart of the replacement of the same (or different) tundish 12 by the continuous casting equipment of the illustrated example. In the same way as the above-mentioned ladle exchange, the operator selects "same T / D exchange" (or "different T / D exchange") on the display, so that the next operation will be "same (or different) tank". "Dish exchange" is instructed (at the same time, whether L / N support device 20 is used, L / N
In response to this instruction, the casting operation control system automatically recognizes the operation and movement of each device such as the swing tower 14 and the tundish turret 16 in response to this instruction.

Next, the operator gives a start instruction (start) of "exchange of the same (or different) tundish". By this instruction, similarly to the above-described replacement of the ladle 10, the ladle 10 filled with molten steel by the ladle crane 40 is mounted on the swing tower 14, and when this is detected, for swinging the swing tower 14, Ladle 10
Is raised to the upper limit, and the sand discharging device 18 (sand discharging truck) is called in. At the same time, the old ladle 10 is tilted, and when the pouring is completed, the S / N of the ladle 10 is closed, the mold powder feeding device 30 is retracted, the ladle 10 is tilted and returned, and the injection port of the tundish 10 lid is closed. Open, ladle 10 and L / N
48 climbs are made. When the pouring operation control system confirms that the above operation is completed by the sensors or the like arranged in each device, the swing tower 14 is displayed on the display.
Is displayed to indicate that the can be turned.

On the other hand, around the tundish 12, the height of the tundish 12 during casting is adjusted to the lower limit + α by the start instruction of "exchange of the same (or different) tundish", and then the S of the tundish 12 is adjusted. /
N is closed and the casting is completed. When the casting is completed, the electromagnetic coil 26 and the plasma heater 24 are retracted,
The automatic equipment deck 38 rises, and the tundish 1
2 rises to the upper limit.

After confirming the work around the ladle 10 and the safety by the display indicating that the swing tower 14 can be turned, the worker pushes a switch to instruct the swing tower 14 to turn. To do. As a result, the swing tower 14 starts driving, and the new ladle 10
Moves from the loading position 14a to the pouring position 42, and the empty old ladle 10 moves from the pouring position 42 to the loading position 14a. The old ladle 10 that has moved to the mounting position 14a descends to a predetermined position and is conveyed by the ladle crane 40.

When the pouring operation control system confirms that the old ladle 10 has been transported by the ladle crane 40, the display indicates that the preparation for moving the new ladle 10 to the sand discharging position is completed. After confirmation of work and safety by the worker, the switch for starting the movement of the ladle 10 is pushed. By this instruction, the swing tower 14 is driven and the new ladle 10 is moved from the pouring position 42 to the sand discharging position 14b.

After moving the new ladle 10, the L / N support device 20
L / N depending on whether or not the L / N is used
When the replacement of N is instructed, the L / N support device 20 is driven and a new L
/ N48 is set to the L / N casting position, and further set to the L / N pre-installation position. On the other hand, when the L / N is not replaced, the L / N support device 20 waits at the upper limit position,
Then, the L / N 48 is set at the position before mounting.

When the pouring operation control system confirms that the above-described operations around the ladle and the tundish have been completed by the sensors or the like arranged in the respective devices, the tundish 12 is cast on the display in the same manner. Included position 4
A message indicating that preparation for moving from 2 to the waste position 16a is completed is displayed. Tundish 1 after confirmation by the worker
When the movement start switch 2 is pressed, the tundish turret 16 starts driving, the tundish 12 is moved to the slag position 16a, and the slag remaining in the tundish 12 is discharged. At the same time, the eddy current sensor 34 is retracted in order to put in the connecting jig (metal), and further, the connecting jig is put into the mold 50 by the metal throwing device 32.

When the insertion of the connecting jig is confirmed, in the case of the same tundish replacement, the tundish 12 whose waste has been discharged to the display is ready to be moved from the waste position 16a to the pouring position 42. Is displayed, on the other hand,
In the case of a different tundish exchange, a message indicating that preparation for moving the new tundish from the preheating position 16c to the pouring position 42 is completed is displayed.

In the case of the same tundish replacement, after confirmation by the operator, the switch for starting the movement of the tundish 12 from the slag position 16a to the pouring position 42 is pressed. Due to this instruction, the tundish 12 turns, so that the tundish 12 at the slag position 16a rises to the upper limit, and at the same time, the automatic equipment deck 38 also rises. When the ascending of both ends, the tundish turret 16 rotates, and the tundish 12 which has finished the waste is in the waste position 1.
6a is moved to the pouring position 42.

On the other hand, in the case of different tundish exchange, after the confirmation by the operator, the switch for starting the movement of the new tundish 12 from the preheating position 16c to the pouring position 42 is pressed. By this instruction, tundish 1
Because of two turns, the tundish 12 at the preheating position 16c rises to the upper limit, and at the same time, the automatic equipment deck 38 also rises. When the ascent of both is completed, the tundish turret 16 rotates and the preheated tundish 12 is moved from the preheat position 16c to the pouring position 42.

When the tundish 12 moves to the pouring position 42, the L / N support device 20 sets the L / N 48 at the pouring position, and further the vortex sensor 34 and the mold powder charging device 30 are set at predetermined positions. . Next, the tundish 12 is lowered to the intermediate position, the automatic equipment deck 38 is lowered, the inlet of the tundish 12 is opened, and the L / N 48 is set to the L / N pre-installation position. The electromagnetic coil 26 is set at a predetermined position for turning the molten steel.

When the pouring operation control system confirms that the above operation has been completed, the display indicates that preparations for sand discharge and movement of the new ladle 10 to the pouring position 42 have been completed in the same manner as above. Is displayed. After the worker makes the same confirmation, when the switch for starting the sand discharging and the movement of the new ladle 10 to the pouring position 42 is pressed, the S / N of the ladle 10 is opened at the sand discharging position 14a. The sand is removed, and then the swing tower 14 is driven to insert the new ladle 10 into the pouring position 42.
Move to.

When the ladle 10 moves to the pouring position 42, L
The L / N support device 20 attaches the L / N 48 to the ladle 10 and enters a synchronized state, the ladle 10 and the L / N 48 descend to an intermediate position, the L / N 48 is set in the tundish 12, and the inlet is opened. Blocked and further ladle 10 and L /
N48 descends to a specified position (lower limit +50 mm), and the tundish 12 descends to lower limit + x mm.

In the replacement of the tundish 12 by this equipment, a worker operates a switch for starting the turning of the swing tower 14, from the pouring position 42 to the sand discharging position 14.
a switch for starting the movement of the ladle to b, a switch for starting the movement of the tundish 10 from the pouring position 42 to the slag position 16a, pouring from the slag position 16a (or preheating position 16c) Tundish 1 in position 42
A total of 5 start instructions (6 times including the start of tundish exchange start) of the switch for starting the movement of 0 and the switch for starting the movement of the sand discharge and the ladle 10 to the pouring position 42. Just perform, and then the tundish will be replaced automatically.

Further, in the continuous casting equipment of the illustrated example utilizing the control method of the present invention, the ladle 10 is moved from the mounting position 14a to the sand discharging position 14b in another casting operation, that is, in the start of casting. Switch, a switch for moving the tundish 12 from the slag position 16a to the pouring position 42, and the ladle 10 from the sand discharging position 14b to the pouring position 4
With a total of three switch operations of the switch moving to 2; at the end of the pouring, the switch for moving the ladle 10 from the pouring position 42 to the mounting position 14a, and the tundish 1
2 is moved from the pouring position 42 to the slag position 16a by a total of two switch operations; L / N trouble (L / N
Swing Tower 14 turn and L / N
With a total of two switch operations of the switch for starting the exchange and the switch for starting the lowering of the ladle 10; in the case of an I / N trouble (I / N exchange), a total of 1 switch for starting the I / N exchange. With one switch operation; each pouring operation can be operated automatically.

Although the casting operation control method in the continuous casting equipment of the present invention has been described in detail above, the present invention is not limited to the above-mentioned examples, and various improvements and changes are made without departing from the gist of the present invention. Of course you may go.

[0048]

As described in detail above, according to the pouring operation control method in the continuous casting equipment of the present invention, the pouring operation can be performed by a small number of workers and with a simple operation. Moreover, it is possible to operate a continuous casting facility with sufficient safety.

[Brief description of drawings]

FIG. 1 is a plan view of a casting floor of a continuous casting facility for carrying out a casting operation control method in the continuous casting facility of the present invention.

FIG. 2 is a side sectional view of the continuous casting facility shown in FIG.

FIG. 3 is a flow chart of ladle exchange accompanied by immersion nozzle exchange by the continuous casting equipment shown in FIGS. 1 and 2.

FIG. 4 is a diagram conceptually showing an example of a display of the operating device of the continuous casting facility shown in FIGS. 1 and 2.

FIG. 5 is a flowchart of tundish exchange by the continuous casting facility shown in FIGS. 1 and 2.

FIG. 6 is a flowchart of tundish exchange by the continuous casting facility shown in FIGS. 1 and 2, which is a continuation of FIG. 5.

[Explanation of symbols]

10 ladle 12 tundish 14 swing tower 16 Tundish Turret 18 Sand discharging device (sand discharging truck) 20 Long nozzle (L / N) support device 22 Long nozzle (L / N) preheating device 24 Plasma heater 26 electromagnetic coil 28 Immersion nozzle (I / N) exchange device 30 Mold powder feeding device 32 Hardware input device 34 Eddy current sensor 36 Preheating device 38 Automatic equipment deck 40 ladle crane 42 Casting position 44 tilting cart 46 Sliding nozzle (S / N) exchange device 48 long nozzles (L / N) 50 Mold

Continued front page    (72) Inventor Makoto Aratani               1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Kawasaki               Chiba Steel Works, Ltd. (72) Inventor Sakurai Mitsuru               1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Kawasaki               Chiba Steel Works, Ltd. (72) Inventor Masahiro Yamada               1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Kawasaki               Chiba Steel Works, Ltd.                (56) References JP-A-6-15421 (JP, A)                 JP 62-252663 (JP, A)                 Actual Kaihei 1-61704 (JP, U)

Claims (2)

(57) [Claims] 1. A casting which receives an instruction of an operation event from the next time onward, automatically recognizes the operation of a constituent device of a continuous casting facility according to the instruction, and automatically operates each constituent device according to the recognition by a start instruction. It is a built-in operation control method, only movement of ladle, movement of tundish and sand discharge are
The continuous operation characterized by temporarily stopping the operation of the corresponding component device before that, restarting the operation and continuing the automatic operation afterwards by the instruction to move the ladle, move the tundish or start the sand discharge. Casting operation control method in casting equipment. 2. The operation event includes the start of casting, the replacement of a ladle with the replacement of the immersion nozzle, the replacement of the ladle without the replacement of the immersion nozzle, the same tundish replacement, the replacement of different tundish, and the casting. The casting operation control method in a continuous casting facility according to claim 1, wherein the casting operation control method is one or more selected from the group consisting of termination, treatment of long nozzle trouble, and treatment of immersion nozzle trouble.